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Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA changes
The following reply was made to PR kern/52700; it has been noted by GNATS.
From: Michael van Elst <mlelstv%serpens.de@localhost>
To: =?iso-8859-1?Q?Jarom=EDr?= Dole?ek <jaromir.dolecek%gmail.com@localhost>
Cc: gnats-bugs%netbsd.org@localhost, mlelstv%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
netbsd-bugs%netbsd.org@localhost, Andreas Gustafsson <gson%gson.org@localhost>
Subject: Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA
Date: Mon, 6 Nov 2017 06:33:13 +0100
On Sun, Nov 05, 2017 at 02:57:10PM +0100, Jaromír Dole?ek wrote:
> I had a brief look into wd.c, seems after the dksubrification, the wddone()
> no longer calls ata_channel_start(), which likely will cause I/O to stall
> on machines with port multiplier. This should be fixed of course, but I
> don't think it causes this issue.
Doesn't stall I/O only for port multiplier, but probably also for
PATA slave drives..
Michael van Elst
"A potential Snark may lurk in every tree."
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